Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)

Posts: 26,317

Total Cats: 1,915

If you have a stable and believable RPM signal while cranking on the starter, then you don't have the CAS wires reversed. If they're flipped, the unit won't sync properly.

You said you did a 1.8 swap, right? Be aware that the ignition coils on the 1.8 engines are backwards as compared to the 1.6 engines. As viewed from the front, the right-side coil on a 1.6 engine connects to plugs 1 and 4, and the coil on the left connects to 2 & 3. With the 1.8 coils, the right side is 2 and 3 and the left side is 1 and 4.

So you may simply have the plug wires reversed. Happens to all of us. Try flipping 'em around.

Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)

Posts: 26,317

Total Cats: 1,915

Quote:

Originally Posted by absRTP

Should I use the ignitor + the BP-Z3 coils ?

No! Absolutely not. You must use one or the other of:

1.8-style coils, wired directly to the Brn and Brn/Yel wires of the vehicle's harness at the point where they would normally enter the igniter, OR

1.6 style coils, with the igniter installed as normal.

To be honest, using the igniter and 1.6 coils is probably going to be beneficial at this stage for the purposes of diagnosis (assuming the under-hood harness has not been hacked up) even if they're just lying on the top of the valve cover. If you're uncertain as to whether they're making contact, you can use a sharp knife to trim away the section of the boot which seals against the valve cover, thus enabling them to be fully inserted. (I've honestly never tried using '90-'00 style plug wires on a VVT valve cover.)

Quote:

I tried using a timing light on the first spark plug cable with the 1.6 coils and it only does one flash (and a small flash)

This is interesting.

Assuming that your MS is built to the DIY-style plans insofar as the spark driver circuit, then a single spark at power-on is expected. It's an unfortunate side-effect of how they have the circuit designed.

However, if you're not getting any action after that, then it makes me wonder about the software configuration of the MS (presupposing that you have a solid RPM indication while cranking.)

I have seen some timing lights that wouldn't work while the starter was turning, because the starter pulls the battery voltage down too low. So you can try powering the light from an external source (preferably another car battery.)

I still suggest that you at least try swapping the plug wires around, just to be sure that you haven't fallen victim to the 1.6 vs 1.8 mismatch.

Assuming that your MS is built to the DIY-style plans insofar as the spark driver circuit, then a single spark at power-on is expected. It's an unfortunate side-effect of how they have the circuit designed.

I'm using your "Spark output inverted" circuit, because I was tired of the "POP" when I was starting my car.

Quote:

I still suggest that you at least try swapping the plug wires around, just to be sure that you haven't fallen victim to the 1.6 vs 1.8 mismatch.

I tried this yesterday, but without great result.

Other point, I guess their is something somewhere that is not right, when my 1.6 was running like crap, I was already trying to swap the ignition to COPs, but everytime I was trying to start the engine with the COPs I was'nt able to get fire. I'm sure my wiring was right but I never had the chance to interchange it with somebody else that is running COPs.

Now, I think I might have the same reminant problem, Coils with integrated ignitor won't fire up. I will put a clean schematic of the wiring I did and the modification I did in the MS circuits. Hoping someone will point something wrong.

At this point, I'm not ashamed or shy anymore, I might have done mistakes somewhere, either in the MS or while doing the wiring. Even if I'm an electrical engeneering student, I did'nt knew much when I assembled the MS years ago and I'm glad that people in here are able to give me great advice and are trying to helps me.